Question: When did Bochum have a population of 341,935?
Paraphrase: When did the population of Bochum reach 341,935?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q2103 p:P1082 ?s . ?s ps:P1082 ?x filter(contains(?x , '341935.0')) . ?s pq:P585 ?value}